iPhone · Research guidance. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Choose a local visual need
A player’s surrounding menus can be difficult to read even when other iPhone apps are comfortable. Apple provides per-app visual accessibility settings for supported choices. Identify whether the issue is text size, contrast, colour or motion. An app-specific adjustment is useful when a device-wide change would alter interfaces that already work well for you.
Add the intended app
Open Settings, Accessibility, Per-App Settings. Apple documents Add App, followed by selection from the list. Choose the actual app used for the viewing task. If the service is a website opened in a browser, the selected app is the browser; this operating-system list is not a list of individual streaming websites or service accounts.
Review one preference
Open that app’s entry and inspect the available text, colour and motion choices. Change only the relevant preference first. Keep a note of the default or previous value. A setting offered by iOS does not mean every custom interface element will respond identically, so judge the result in the actual app rather than only in Settings.
Check the complete interaction
Return to the programme list and the controls you need. Check whether longer labels fit, captions remain readable and important buttons stay reachable. A useful visual choice should support the whole task. If it improves one label but hides another control, adjust the value or restore the original state instead of assuming a larger number is always better.
Keep account preferences separate
The per-app entry applies to an application on the phone. It is not a service viewing profile and does not select programme entitlement or a subtitle language. If several people use the same app, review the actual app state before each handover. Describe the visual setting and affected control precisely when asking for accessibility help.
Questions, answered
Can one website be selected from the iPhone app list?
The list selects applications. A website used in a browser belongs to that browser app context.
Does this create a separate viewing profile?
No. It changes supported visual preferences for the selected app.